<?php
echo PHP_VERSION, '<br>';
$n = 80000000;
$s = 0;
$ss = round(microtime(true) * 1000);
for ($i = 0; $i < $n; $i++) $s++;
$ee = round(microtime(true) * 1000);
printf("循环%d,耗时：%dms", $n, $ee - $ss);
